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COFDM Demodulation (DVB-T, DVB-H)
Modulation
QPSK, 16-QAM, 64-QAM
(hierarchical, non-hierarchical)
FFT length
2k / 4k / 8k
Code rates
1/2, 2/3, 3/4, 5/6, 7/8
Guard interval factor
1/4, 1/8, 1/16, 1/32
Reed Solomon
188, 204 byte packets
Mode detection
Automatic
Synchronisation time
< 250 ms
Measurement Results
Resolution
Accuracy
Frequency Offset
1 Hz
< 10 Hz with external reference
Bandwidth
0.1 Hz
look-up table
Bandwidth Offset
0.1 Hz
< 10 Hz with external reference
Net Bit Rate
1 bit / s
look-up table
Bitrate Offset
0.1 bit / s
< 10 bit/s with external reference
Cell Identifier
- / -
- / -
Modulation Error Ratio
42 dB
±
1.5dB
COFDM Demodulation (DVB-T2)
Modulation
QPSK, 16-QAM, 64-QAM, 256-QAM
(rotated, non-rotated)
FFT length
1k / 2k / 4k / 8k / 16k / 32k (ext. BW)
Code rates
1/2, 3/5, 2/3, 3/4, 4/5, 5/6
Guard interval factor
1/4, 19/128, 1/8, 19/256, 1/16, 1/32, 1/128
Reed Solomon
188, 204 byte packets
Mode detection
Automatic
Synchronisation time
< 5 s
Measurement Results
Resolution
Accuracy
Frequency Offset
1 Hz
< 10 Hz with external reference
Bandwidth
0.1 Hz
look-up table
Bandwidth Offset
0.1 Hz
< 10 Hz with external reference
Net Bit Rate
1 bit / s
look-up table
Bitrate Offset
0.1 bit / s
< 10 bit/s with external reference
Modulation Error Ratio
42 dB
±
1.5dB
(on L1-post and data PLP)
COFDM Demodulation (DAB, DAB+)
Modes
I (Band III)
Modulation
π⁄4-DQPSK
Channel spacing
1.712 MHz
Carrier spacing
1.537 kHz
FFT length
2k
Synchronisation time
< 5 s
Measurement Results
Resolution
Accuracy
Frequency Offset
1 Hz
< 10 Hz with external reference
Bandwidth
0.1 Hz
look-up table
Bandwidth Offset
0.1 Hz
< 10 Hz with external reference
Net Bit Rate
1 bit / s
look-up table
Bitrate Offset
0.1 bit / s
< 10 bit/s with external reference
4T2-Portable Manual EN.odt / Technical specifications
Page 13